diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index a1a088b..c291790 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -132,7 +132,6 @@
 	select IRQ_CPU
 	select SYS_HAS_CPU_MIPS32_R1
 	select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
-	select NR_CPUS_DEFAULT_2
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_BIG_ENDIAN
 	select SYS_HAS_EARLY_PRINTK
@@ -612,7 +611,6 @@
 	select BOOT_ELF32
 	select DMA_COHERENT
 	select HAVE_PATA_PLATFORM
-	select NR_CPUS_DEFAULT_2
 	select SIBYTE_SB1250
 	select SWAP_IO_SPACE
 	select SYS_HAS_CPU_SB1
@@ -626,7 +624,6 @@
 	select BOOT_ELF32
 	select DMA_COHERENT
 	select HAVE_PATA_PLATFORM
-	select NR_CPUS_DEFAULT_2
 	select SIBYTE_SB1250
 	select SWAP_IO_SPACE
 	select SYS_HAS_CPU_SB1
@@ -638,7 +635,6 @@
 	bool "Sibyte BCM91250E-Sentosa"
 	select BOOT_ELF32
 	select DMA_COHERENT
-	select NR_CPUS_DEFAULT_2
 	select SIBYTE_SB1250
 	select SWAP_IO_SPACE
 	select SYS_HAS_CPU_SB1
@@ -1866,7 +1862,6 @@
 	select CPU_MIPSR2_IRQ_VI
 	select CPU_MIPSR2_IRQ_EI
 	select MIPS_MT
-	select NR_CPUS_DEFAULT_2
 	select SMP
 	select SYS_SUPPORTS_SCHED_SMT if SMP
 	select SYS_SUPPORTS_SMP
@@ -2177,12 +2172,6 @@
 config SYS_SUPPORTS_SMP
 	bool
 
-config NR_CPUS_DEFAULT_1
-	bool
-
-config NR_CPUS_DEFAULT_2
-	bool
-
 config NR_CPUS_DEFAULT_4
 	bool
 
@@ -2200,10 +2189,8 @@
 
 config NR_CPUS
 	int "Maximum number of CPUs (2-64)"
-	range 1 64 if NR_CPUS_DEFAULT_1
+	range 2 64
 	depends on SMP
-	default "1" if NR_CPUS_DEFAULT_1
-	default "2" if NR_CPUS_DEFAULT_2
 	default "4" if NR_CPUS_DEFAULT_4
 	default "8" if NR_CPUS_DEFAULT_8
 	default "16" if NR_CPUS_DEFAULT_16
diff --git a/arch/mips/kernel/mcount.S b/arch/mips/kernel/mcount.S
index a03e93c..539b629 100644
--- a/arch/mips/kernel/mcount.S
+++ b/arch/mips/kernel/mcount.S
@@ -83,7 +83,7 @@
 	PTR_S	MCOUNT_RA_ADDRESS_REG, PT_R12(sp)
 #endif
 
-	move	a0, ra		/* arg1: self return address */
+	PTR_SUBU a0, ra, 8	/* arg1: self address */
 	.globl ftrace_call
 ftrace_call:
 	nop	/* a placeholder for the call to a real tracing function */
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index 9d686bf..364d26a 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -121,6 +121,14 @@
 {
 	plat_time_init();
 
-	if (!mips_clockevent_init() || !cpu_has_mfc0_count_bug())
+	/*
+	 * The use of the R4k timer as a clock event takes precedence;
+	 * if reading the Count register might interfere with the timer
+	 * interrupt, then we don't use the timer as a clock source.
+	 * We may still use the timer as a clock source though if the
+	 * timer interrupt isn't reliable; the interference doesn't
+	 * matter then, because we don't use the interrupt.
+	 */
+	if (mips_clockevent_init() != 0 || !cpu_has_mfc0_count_bug())
 		init_mips_clocksource();
 }
diff --git a/arch/mips/loongson/common/Makefile b/arch/mips/loongson/common/Makefile
index 4c57b3e..9e4484c 100644
--- a/arch/mips/loongson/common/Makefile
+++ b/arch/mips/loongson/common/Makefile
@@ -3,8 +3,9 @@
 #
 
 obj-y += setup.o init.o cmdline.o env.o time.o reset.o irq.o \
-    pci.o bonito-irq.o mem.o machtype.o platform.o
+    bonito-irq.o mem.o machtype.o platform.o
 obj-$(CONFIG_GPIOLIB) += gpio.o
+obj-$(CONFIG_PCI) += pci.o
 
 #
 # Serial port support
diff --git a/arch/mips/mm/gup.c b/arch/mips/mm/gup.c
index d4ea5c9..06ce17c 100644
--- a/arch/mips/mm/gup.c
+++ b/arch/mips/mm/gup.c
@@ -12,6 +12,7 @@
 #include <linux/swap.h>
 #include <linux/hugetlb.h>
 
+#include <asm/cpu-features.h>
 #include <asm/pgtable.h>
 
 static inline pte_t gup_get_pte(pte_t *ptep)
@@ -273,7 +274,7 @@
 	len = (unsigned long) nr_pages << PAGE_SHIFT;
 
 	end = start + len;
-	if (end < start)
+	if (end < start || cpu_has_dc_aliases)
 		goto slow_irqon;
 
 	/* XXX: batch / limit 'nr' */
diff --git a/arch/mips/powertv/Kconfig b/arch/mips/powertv/Kconfig
index 1a1b03e..dd91fba 100644
--- a/arch/mips/powertv/Kconfig
+++ b/arch/mips/powertv/Kconfig
@@ -1,14 +1,7 @@
-config BOOTLOADER_DRIVER
-	bool "PowerTV Bootloader Driver Support"
-	default n
-	depends on POWERTV
-	help
-	  Use this option if you want to load bootloader driver.
-
 config BOOTLOADER_FAMILY
 	string "POWERTV Bootloader Family string"
 	default "85"
-	depends on POWERTV && !BOOTLOADER_DRIVER
+	depends on POWERTV
 	help
 	  This value should be specified when the bootloader driver is disabled
 	  and must be exactly two characters long. Families supported are:
diff --git a/arch/mips/powertv/asic/asic_devices.c b/arch/mips/powertv/asic/asic_devices.c
index 0238af1..8380605 100644
--- a/arch/mips/powertv/asic/asic_devices.c
+++ b/arch/mips/powertv/asic/asic_devices.c
@@ -147,20 +147,10 @@
 	if (check_forcefamily(forced_family) == 0)
 		bootldr_family = BOOTLDRFAMILY(forced_family[0],
 			forced_family[1]);
-	else {
-
-#ifdef CONFIG_BOOTLOADER_DRIVER
-		bootldr_family = (unsigned short) kbldr_GetSWFamily();
-#else
-#if defined(CONFIG_BOOTLOADER_FAMILY)
+	else
 		bootldr_family = (unsigned short) BOOTLDRFAMILY(
 			CONFIG_BOOTLOADER_FAMILY[0],
 			CONFIG_BOOTLOADER_FAMILY[1]);
-#else
-#error "Unknown Bootloader Family"
-#endif
-#endif
-	}
 
 	pr_info("Bootloader Family = 0x%04X\n", bootldr_family);
 
diff --git a/arch/mips/powertv/init.c b/arch/mips/powertv/init.c
index a01baff..4989263 100644
--- a/arch/mips/powertv/init.c
+++ b/arch/mips/powertv/init.c
@@ -87,8 +87,4 @@
 
 	configure_platform();
 	prom_meminit();
-
-#ifndef CONFIG_BOOTLOADER_DRIVER
-	pr_info("\nBootloader driver isn't loaded...\n");
-#endif
 }
diff --git a/arch/mips/powertv/reset.c b/arch/mips/powertv/reset.c
index 0007652..11c32fb 100644
--- a/arch/mips/powertv/reset.c
+++ b/arch/mips/powertv/reset.c
@@ -21,24 +21,12 @@
 #include <linux/io.h>
 #include <asm/reboot.h>			/* Not included by linux/reboot.h */
 
-#ifdef CONFIG_BOOTLOADER_DRIVER
-#include <asm/mach-powertv/kbldr.h>
-#endif
-
 #include <asm/mach-powertv/asic_regs.h>
 #include "reset.h"
 
 static void mips_machine_restart(char *command)
 {
-#ifdef CONFIG_BOOTLOADER_DRIVER
-	/*
-	 * Call the bootloader's reset function to ensure
-	 * that persistent data is flushed before hard reset
-	 */
-	kbldr_SetCauseAndReset();
-#else
 	writel(0x1, asic_reg_addr(watchdog));
-#endif
 }
 
 void mips_reboot_setup(void)
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 681e7f8..2b0b83c 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -350,7 +350,7 @@
 	}
 
 	/* select "default" board */
-#ifdef CONFIG_CPU_TX39XX
+#ifdef CONFIG_TOSHIBA_JMR3927
 	txx9_board_vec = &jmr3927_vec;
 #endif
 #ifdef CONFIG_CPU_TX49XX